145844077 has 4 divisors (see below), whose sum is σ = 145891936. Its totient is φ = 145796220.

The previous prime is 145844029. The next prime is 145844113. The reversal of 145844077 is 770448541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 770448541 = 12809 ⋅60149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145844077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145844177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19023 + ... + 25564.

It is an arithmetic number, because the mean of its divisors is an integer number (36472984).

Almost surely, 2^145844077 is an apocalyptic number.

It is an amenable number.

145844077 is a deficient number, since it is larger than the sum of its proper divisors (47859).

145844077 is an equidigital number, since it uses as much as digits as its factorization.

145844077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47858.

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 145844077 is about 12076.5921103596. The cubic root of 145844077 is about 526.3762253658.

The spelling of 145844077 in words is "one hundred forty-five million, eight hundred forty-four thousand, seventy-seven".